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Aphasia
- Deficit in language comprehension/production from brain damage(left hemisphere)
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Apraxia
- Difficulty performing movements out of context (left hemisphere)
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Corpus Callosum-
- Major connector between hemispheres
- -Split brain when cut
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Massa Intermedia
- Connects 2 sides of thalamus
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Anterior Commissure-
Connects 2 temporal lobes
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Split brain patients
- -Left: Language tasks, learning where rule finding/context matters
- -Right: Spatial ability, emotion perception, musical ability, 2D/3D
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Analytic synthetic theory-
Analytic (left), synthetic (right)-untestable
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Motor Theory-
Fine movements like speech (left),
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Linguistic Theory-
Language (left), Others grouped around that
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Wernicke-Geschwind Model
- -Left hemisphere- Brocas (Primary Motor Cortex)Language production
- -Damage=Deficit in speech production (expressive aphasia). Normal comprehension/speech awkward
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(receptive aphasia)
- Damage to Wernicke's area produces deficits in comprehension of speech
- ● Patients produce a meaningless “word salad”
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(Expressive aphasia)
- Damage to Broca's area produces deficits in speech production
- ● The patient has normal comprehension, and their speech is meaningful but awkward
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(conduction aphasia)
Damage to Arcuate fasciculus (connects broca /wernicke)– inability to repeat
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alexia and agraphia
Damage to Left Angular Gyrus
- Alexia- (inability to read)
- Agraphia- (inability to write)
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Anterior damage
= expressive deficits
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Posterior damage
=receptive deficits
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